Wireless Telegraphy and Telephony
Forfatter: Alfred P. Morgan
År: 1917
Forlag: The Norman W. Henley Publishing Company
Sted: New York
Udgave: Third Edition, Fully Illustrated
Sider: 33
UDK: 621.396.1 Mor
A practical Treatise on Wireless Telegraphy and Telephony, giving Complete and Detailed Explanations of the Theory and Practice of Modern Radio Apparatus and its Present Day Applications, together with a chapter on the possibilities of its Future Development
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WIRELESS TELEGRAPHY
13
itself. If the ground is very stony or dry, these earth cur-
rents encounter considerable resistance, and the possible
Fig. ii.—An amateur aerial and station.
distance of transmission over soil of this sort is very
much less than if it were moist. Moist soil and water offer
very little resistance, and the difference in the results ob-
tainable at the receiving station when the waves travel over
an area of this sort is very marked.